ADAU1761 Balanced input gain control question
For my design I configured ADAU1761 inputs as balanced and want Left Volume Control to adjust left channel gain.
Unfortunately, I don’t see any respond when I am changing input gain.
The LDBoost is working.
Any ideas?
Attached project zip.
Thank you,
MarkAD_question.zip
Audio Signal Processors
SigmaDSP Audio Processors
adau1761
Hello Mark,
Which control register are you trying to adjust?
Which output are you using?
You will need to enable the ALC in the DSP Registers. It is a not so obvious thing that is needed when using the PGA.
Thanks,
Dave T
Dave,
The ALC is enabled.
The register is: LDVOL[5:0]
Thank you,
Mark
Hello Mark.
No, look in the DSP registers tab:
This screenshot was from your project and you see the ALC is disabled.
In the screenshot you showed, the ALC can be disabled there, and should be if you are not using it.
The clocks still need to go to that circuit.
Dave T
Thanks Dave,
I'll check it in a end of the week.
We closed, unfortunately.
As always- thanks for the prompt response.
Mark
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